package com.chy.edu.controller;


import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.chy.commonutils.Result;
import com.chy.edu.pojo.EduTeacher;
import com.chy.edu.pojo.vo.TeacherVo;
import com.chy.edu.service.EduTeacherService;
import com.chy.servicebase.exceptionhandler.GuLiException;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author chy
 * @since 2020-10-22
 */
@Api(tags = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
@CrossOrigin
public class EduTeacherController {

    // 把service注入
    @Autowired
    private EduTeacherService teacherService;

    // 1.查询讲师表所有数据
    // rest风格
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public Result findAllTeacher(){
        List<EduTeacher> list = teacherService.list(null);
        return Result.ok().data("items",list);
    }

    // 2.逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public Result removeTeacher(@ApiParam(name = "id", value = "讲师ID", required = true) @PathVariable("id") String id) {
        return teacherService.removeById(id) ? Result.ok() : Result.error();
    }

    // 3.分页查询讲师的方法
    // current ： 当前页
    // size: 每页记录数
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("pageTeacher/{current}/{size}")
    public Result pageListTeacher(@ApiParam(name = "current", value = "当前页", required = true) @PathVariable Long current,
                                  @ApiParam(name = "size", value = "每页记录数", required = true) @PathVariable Long size)
    {
        // 创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,size);

        try {
            int i = 10 / 0;
        } catch (Exception e) {
            // 执行自定义异常
            throw new GuLiException(20001,"执行了自定义异常处理");
        }

        // 调用方法实现分页
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal(); // 总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); // 数据list集合
        return Result.ok().data("total",total).data("rows",records);
//        Map map = new HashMap<>();
//        map.put("total",total);
//        map.put("rows",records);
//        return Result.ok().data(map);
    }

    // 4.条件查询带分页的方法
    @ApiOperation(value = "条件查询讲师带分页")
    @PostMapping("pageTeacherCondition/{current}/{size}")
    public Result pageTeacherCondition(@ApiParam(name = "current", value = "当前页", required = true) @PathVariable Long current,
                                       @ApiParam(name = "size", value = "每页记录数", required = true) @PathVariable Long size,
                                       @ApiParam(name = "TeacherVo", value = "查询对象") @RequestBody(required = false) TeacherVo teacherVo)
    {
        // 创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current, size);

        // 构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        // 多条件组合查询
        // 动态sql
        String name = teacherVo.getName();
        Integer level = teacherVo.getLevel();
        String begin = teacherVo.getBegin();
        String end = teacherVo.getEnd();
        // 判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)) {
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)) {
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)) {
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)) {
            wrapper.le("gmt_create",end);
        }

        // 排序
        wrapper.orderByDesc("gmt_create");

        // 调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);

        long total = pageTeacher.getTotal(); // 总记录数
        List<EduTeacher> records = pageTeacher.getRecords(); // 数据list集合
        return Result.ok().data("total",total).data("rows",records);
    }

    // 添加讲师接口的方法
    @ApiOperation(value = "新增讲师")
    @PostMapping("addTeacher")
    public Result addTeacher(@ApiParam(name = "EduTeacher", value = "讲师对象", required = true) @RequestBody EduTeacher eduTeacher)
    {
        return teacherService.save(eduTeacher) ? Result.ok() : Result.error();
    }

    // 根据讲师id进行查询
    @ApiOperation(value = "根据ID查询讲师")
    @GetMapping("getTeacher/{id}")
    public Result getTeacher(@ApiParam(name = "id", value = "讲师ID", required = true) @PathVariable String id) {
        EduTeacher eduTeacher = teacherService.getById(id);
        return Result.ok().data("teacher",eduTeacher);
    }

    // 讲师修改功能
    @ApiOperation(value = "根据ID修改讲师")
    @PostMapping("updateTeacher")
    public Result updateTeacher(@ApiParam(name = "EduTeacher", value = "讲师对象", required = true) @RequestBody EduTeacher eduTeacher) {
        return teacherService.updateById(eduTeacher) ? Result.ok() : Result.error();
    }
}

